offical sts turbo thread

[Phil'sFrontier]

Originally Posted by Johnny912

He only has a airaid intake, banks cat-back and the charger. He said they did a dyno on it and it was 300-310 rwhp. also according too him his dyno sheets gone missing.

I think Sandie(shes one of our top posters, but I haven't seen her much lately) has a Stillen SC+intake and exhaust+normal sized tires.

[Johnny912]

well b4 i do anything of the sort.....turbo/supercharged i wanna know if i can make mid 12's....... i would love too find out if she ever took it down the track w/ the charger and what her time was

[SandToy05]

Originally Posted by Johnny912

Well from what ive been reading, nobody really knows what our trucks are capable of, cause everyone that i know of who has the supercharger kit on the truck / xterra has bigger tires or a lift or added weight. Only guy i know of who doesnt have that extra stuff on his truck and does have the stillen supercharger is some random guy on youtube who claims he has beaten stock corvettes.

He only has a airaid intake, banks cat-back and the charger. He said they did a dyno on it and it was 300-310 rwhp. also according too him his dyno sheets gone missing.

I'm just going by what BRUTAL has told me he found as to the limits of the internal components. Since 350Z guys are making plenty more horsepower I personally think we should be able to make just as much, but that's yet to be seen.

I will be posting a dyno sheet as soon as I can put a day aside from my new house to get over to my shop. We have a Dynapack, so I will be able to get a true horsepower figure at the wheels without my 33's skewing the data.

[Johnny912]

perfect, than from there calculations/ guestimates can be made on a 1/4 mi time

[callen81]

Originally Posted by SandToy05

Granted, you MAY be correct in saying that your turbo setup will beat a bone stock Stillen kit. However, from an APPLES to APPLES perspective, we will be equal. With an UpRev tune on a Stillen kit we will be making the same power, and I'll bet you I'll have plenty more torque down low.

As for the seventh injector, it's not actually that inefficient considering it only activates at wide open throttle. Plus, the fuel gets crazy atomized when it blows through the supercharger's roots, so it gets evenly distributed. It's no more inefficient than a wet nitrous kit that sprays into the intake manifold. It also keeps you CARB legal, which you will certainly not be. Being in Michigan I could care less but a large majority of the guys in Cali will. Plus, best of all, that problem is easily solved by swapping out the injectors just like you're doing. Again, apples to apples.

Not to mention it still doesn't change the fact that you can't make more than about 330 WHP before the internals are stressing. I can put on a smaller pulley and make that with ease.

Here are additional issues with an STS kit:

1. The oil pump which feeds the turbo has to be the lowest point on the oiling system. This puts it down towards the bottom of the truck, which is about the WORST spot to put it if you plan on doing any sort of off-roading. It's also much more complicated which means many more things to go wrong, whether or not you plan on off-roading.

2. Since you aren't running coolant lines, this tells me you're using a thrust bearing turbo which is one of the least efficient turbos you can get. Ball bearing turbos need water cooling because they don't flow enough oil to cool the bearing and provide lubrication. So, your "super efficient" turbo setup is not as efficient as you think it is.

Again, it's good to see other ways of making power but I'm just not convinced that you will all be as thrilled and astounded as you seem to think.

Do remember we have the same bottom end as a vq35-37hr. They routinely see over 500hp with different forced induction setup's. So I really doubt even 350hp would really stress our motor that badly(stock power of the top 370z model). I wonder what a vq40de / vq37hr (swap heads and cams tuned for low end) hybrid would be like power wise.

[xterra hines]

Originally Posted by SandToy05

Granted, you MAY be correct in saying that your turbo setup will beat a bone stock Stillen kit. However, from an APPLES to APPLES perspective, we will be equal. With an UpRev tune on a Stillen kit we will be making the same power, and I'll bet you I'll have plenty more torque down low.

As for the seventh injector, it's not actually that inefficient considering it only activates at wide open throttle. Plus, the fuel gets crazy atomized when it blows through the supercharger's roots, so it gets evenly distributed. It's no more inefficient than a wet nitrous kit that sprays into the intake manifold. It also keeps you CARB legal, which you will certainly not be. Being in Michigan I could care less but a large majority of the guys in Cali will. Plus, best of all, that problem is easily solved by swapping out the injectors just like you're doing. Again, apples to apples.

Not to mention it still doesn't change the fact that you can't make more than about 330 WHP before the internals are stressing. I can put on a smaller pulley and make that with ease.

Here are additional issues with an STS kit:

1. The oil pump which feeds the turbo has to be the lowest point on the oiling system. This puts it down towards the bottom of the truck, which is about the WORST spot to put it if you plan on doing any sort of off-roading. It's also much more complicated which means many more things to go wrong, whether or not you plan on off-roading.

2. Since you aren't running coolant lines, this tells me you're using a thrust bearing turbo which is one of the least efficient turbos you can get. Ball bearing turbos need water cooling because they don't flow enough oil to cool the bearing and provide lubrication. So, your "super efficient" turbo setup is not as efficient as you think it is.

Again, it's good to see other ways of making power but I'm just not convinced that you will all be as thrilled and astounded as you seem to think.

i know for a fact that my setup will beat a bone stock stillen kit. and thats what prox2 was saying. sure if yoy added an intercooler with your supercharger, then you WOULD have lower air temps, but you have an intercooler, and i dont. if i put in a water to air intercooler and so did you. i would bet i would have far cooler air goin into my engine. and yes, you will be making more low end toque, superchargers make instant power. but here is the thing, i plan to srat off at 5.80 psi. the wastegate spring is set to .4bar. i can easly change that out for a .6 or whatever i want and gain more boost far faster then you change you sc pulley. ya i know where the oil pump is. i mounted it. and no i never go off road. i have a 2wd. and i wouldnt of gone with this kit if i did go off roading. and offroading with a turbo anyways is useless. i never once said "super efficient", i just said it was more efficient then the stock supercharger. and i will be using a garrett a/r m24 .60 turbo, no sure if you are familiar with it, but its capable of 20.30 psi, far greater then the supercharger. so when i go to build by vq i can increase the boost over 10 psi, unlike the sc. so what im saying here is that with the money i have spent and going to spend. it will be about the same as the stillen sc, apples to apple. and to get better injecotrs, uprev and a pulley for your sc, that would far exeed the price in what i put into my setup. but i will have more hp and more potential. along with a safer setup, as a turbo wont put instant torque and stress on the engine.

keep in mind these are just some facts and my opinions. the project is not yet complete untill i have a dynochart and time slip. so i am not bragging or trying to fight with you. i am only stating what i think and why i think it.

[SeFronty08]

Unreal

[Phil'sFrontier]

Originally Posted by Johnny912

well b4 i do anything of the sort.....turbo/supercharged i wanna know if i can make mid 12's....... i would love too find out if she ever took it down the track w/ the charger and what her time was

Give her a PM or something. sandiegan05fronty is the screen name.

[kavonalair]

So, what does a setup like that cost? I have considered an STS, or a Stillen but can't really decide which way I want to go.

[SandToy05]

Originally Posted by xterra hines

i know for a fact that my setup will beat a bone stock stillen kit. and thats what prox2 was saying. sure if yoy added an intercooler with your supercharger, then you WOULD have lower air temps, but you have an intercooler, and i dont.

Yes, but adding an intercooler for you would just further increase the already insane turbo lag you're going to see. Plus my kit came with the intercooler as stock, so I didn't have to spend extra on it.

and yes, you will be making more low end toque, superchargers make instant power. but here is the thing, i plan to srat off at 5.80 psi. the wastegate spring is set to .4bar. i can easly change that out for a .6 or whatever i want and gain more boost far faster then you change you sc pulley.

Not true. I have a quick change pulley kit from Pulley Boyz, so I can change a pulley just as fast as changing a wastegate spring. And my pulley won't be red-hot like your wastegate will be!

ya i know where the oil pump is. i mounted it. and no i never go off road. i have a 2wd. and i wouldnt of gone with this kit if i did go off roading. and offroading with a turbo anyways is useless.

And I knew you weren't going to off-road it, I was just making the point due to the fact that most guys on here do some of that. It was just something inherent to the STS kits I thought was worthy of mentioning.

and i will be using a garrett a/r m24 .60 turbo, no sure if you are familiar with it, but its capable of 20.30 psi, far greater then the supercharger. so when i go to build by vq i can increase the boost over 10 psi, unlike the sc.

I am familiar with that basic profile but you really need to measure the inducer and exducer wheels to know what you have. A .60 A/R housing isn't that big considering our displacement, and it's still a thrust bearing turbo. I am certain that you will be able to pull more boost out of that than I will out of my blower, but we'll see if you can actually get more than 10-12 PSI without holing a piston. And I'll still have more torque

so what im saying here is that with the money i have spent and going to spend. it will be about the same as the stillen sc, apples to apple. and to get better injecotrs, uprev and a pulley for your sc, that would far exeed the price in what i put into my setup.

That's still yet to be seen. I'd like to see your total cost sheet when this is all said and done. Considering you are paying for a custom installation I doubt it will cost less than the Stillen kit on the sale price. I installed mine in my apartment car-port in two days by myself; for the cost of installation that I saved, I could probably have bought an UpRev right there.

but i will have more hp and more potential. along with a safer setup, as a turbo wont put instant torque and stress on the engine.

I honestly, honestly doubt you will have more horsepower but again, I am interested to see the dyno sheets. In terms of safety, I don't see a massive spike of boost building after 3000 RPM's as a SAFE thing, regardless of the torque value.

keep in mind these are just some facts and my opinions. the project is not yet complete untill i have a dynochart and time slip. so i am not bragging or trying to fight with you. i am only stating what i think and why i think it.

I know, and I thank you for being able to have a nice civilized debate like this! This is what forums should be about. I'm excited to see what the dyno says for you and as soon as I get mine done I'll be the first to post it. Regardless of the method we're both building fast trucks and it's cool to see how other people go about the same task.

And just so you know, I'm not exactly supercharger partial. I used to install turbo kits on Supras, MR2s, Lotus Elises and numerous other Toyota based vehicles for years working at a local shop (Monkeywrench Racing). I had a 550 WHP AWD Eagle Talon for three years and loved the turbo sensation, and I used to make fun of my buddy's Ford Lightning all the time because he couldn't run half the boost that I did. If there was a way to economically put a twin or single turbo kit on this truck I would be the first to do it, believe you me.